Long Ceramic-Lined Pipes Produced by a Centrifugal-Thermit Process

Longer than 3-m ceramic-lined pipes can be produced by means of a thermit-reaction-induced process under the influence of a centrifugal force ("centrifugal-thermit process"). By igniting only a part of the reactant, the thermit reaction rapidly proceeds to provide a ceramic lining of homogeneous quality in the direction of the pipe length. As a result of the residual stress measurement of each layer forming the present ceramic-lined pipe, it is confirmed that the intermediate metal layer produced plays an important role in balancing the stress between the ceramic and outer pipe layers.